Free instant cal → BTU converter. No signup, no uploads — everything is calculated privately in your browser.
1 cal = 0.00396567 btu
1 calories = 0.00396567 btu
Free, instant, and 100% private — every calculation runs in your browser. Nothing is uploaded.
1 calorie equals 0.00396567 btu. To convert calories to btu, divide the value by 252.1644007217973.
1 calorie = 0.00396567 btu. Formula: value ÷ 252.1644007217973
Example: 1 cal → 0.00396567 BTU. Type any value in the converter above to see it converted live.
| Calories (cal) | BTU (BTU) |
|---|---|
| 1 cal | 0.00396567 BTU |
| 2 cal | 0.00793133 BTU |
| 5 cal | 0.0198283 BTU |
| 10 cal | 0.0396567 BTU |
| 25 cal | 0.0991417 BTU |
| 50 cal | 0.198283 BTU |
| 100 cal | 0.396567 BTU |
| 250 cal | 0.991417 BTU |
| 500 cal | 1.98283 BTU |
| 1,000 cal | 3.96567 BTU |
1 calorie = 0.00396567 btu. Formula: value ÷ 252.1644007217973. Enter the value above and the result appears instantly — the calculation runs entirely in your browser.
Exactly: 1 calorie = 0.003965666831390919 btu. The reverse factor is 1 British thermal unit = 252.1644007217973 calories.
1 cal = 0.00396567 BTU; 10 cal = 0.0396567 BTU; 100 cal = 0.396567 BTU. Use the full conversion table below for more reference values.
No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".